xbmc/utils/Event.cpp

   1 /*
   2 * XBMC Media Center
   3 * Copyright (c) 2002 Frodo
   4 * Portions Copyright (c) by the authors of ffmpeg and xvid
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation; either version 2 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include "Event.h"
  22 #include "log.h"
  23
  24 //////////////////////////////////////////////////////////////////////
  25 // Construction/Destruction
  26 //////////////////////////////////////////////////////////////////////
  27
  28 CEvent::CEvent(bool manual)
  29 {
  30   if(manual)
  31     m_hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
  32   else
  33     m_hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
  34 }
  35
  36 CEvent::CEvent(const CEvent& src)
  37 {
  38   if(DuplicateHandle( GetCurrentProcess()
  39                     , src.m_hEvent
  40                     , GetCurrentProcess()
  41                     , &m_hEvent
  42                     , 0
  43                     , TRUE
  44                     , DUPLICATE_SAME_ACCESS ))
  45   {
  46     CLog::Log(LOGERROR, "CEvent - failed to duplicate handle");
  47     m_hEvent = INVALID_HANDLE_VALUE;
  48   }
  49 }
  50
  51 CEvent::~CEvent()
  52 {
  53   CloseHandle(m_hEvent);
  54 }
  55
  56 CEvent& CEvent::operator=(const CEvent& src)
  57 {
  58   CloseHandle(m_hEvent);
  59
  60   if(DuplicateHandle( GetCurrentProcess()
  61                     , src.m_hEvent
  62                     , GetCurrentProcess()
  63                     , &m_hEvent
  64                     , 0
  65                     , TRUE
  66                     , DUPLICATE_SAME_ACCESS ))
  67   {
  68     CLog::Log(LOGERROR, "CEvent - failed to duplicate handle");
  69     m_hEvent = INVALID_HANDLE_VALUE;
  70   }
  71   return *this;
  72 }
  73
  74
  75 void CEvent::Wait()
  76 {
  77   if (m_hEvent)
  78   {
  79     WaitForSingleObject(m_hEvent, INFINITE);
  80   }
  81 }
  82
  83 void CEvent::Set()
  84 {
  85   if (m_hEvent) SetEvent(m_hEvent);
  86 }
  87
  88 void CEvent::Reset()
  89 {
  90
  91   if (m_hEvent) ResetEvent(m_hEvent);
  92 }
  93
  94 HANDLE CEvent::GetHandle()
  95 {
  96   return m_hEvent;
  97 }
  98
  99 bool CEvent::WaitMSec(unsigned int milliSeconds)
 100 {
 101
 102   if (m_hEvent)
 103   {
 104     DWORD dwResult = WaitForSingleObject(m_hEvent, milliSeconds);
 105     if (dwResult == WAIT_OBJECT_0) return true;
 106   }
 107   return false;
 108 }
 109